Discuz! Database Error

(145) Table './ultrax/forum_post' is marked as crashed and should be repaired

SELECT * FROM forum_post WHERE `tid` IN('613035','507328','486382','477518','459241','458780','458596','458388','458257','458153','458032','457713','457871','457601','457513','457258','455085','454925','454828','454697') AND `first`='1'